The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2022
Filed:
Dec. 28, 2020
Applicant:
Fujitsu Optical Components Limited, Kawasaki, JP;
Inventors:
Tetsuji Yamabana, Kawasaki, JP;
Tsuyoshi Morishita, Sapporo, JP;
Assignee:
FUJITSU OPTICAL COMPONENTS LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/50 (2013.01); H04B 10/556 (2013.01); H04B 10/564 (2013.01);
U.S. Cl.
CPC ...
H04B 10/50575 (2013.01); H04B 10/5561 (2013.01); H04B 10/564 (2013.01);
Abstract
Controller and control method are provided. In particular, a controller is disclosed as being configured to hold intensities of a monitor signal, which changes according to an output from a region in a device, before and after altering a state of a portion in the region and control the state of the portion based on a difference between the held intensities.